ICD-10-CM Code M79.3

Panniculitis, unspecified

Version 2020 Billable Code

Valid for Submission

M79.3 is a billable code used to specify a medical diagnosis of panniculitis, unspecified. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code M79.3 might also be used to specify conditions or terms like acute panniculitis, calcific panniculitis, cold panniculitis, cold panniculitis, cytophagic histiocytic panniculitis, drug-induced panniculitis, etc

Short Description:Panniculitis, unspecified
Long Description:Panniculitis, unspecified

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code M79.3:

Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • lupus panniculitis L93.2
  • neck and back panniculitis M54.0
  • relapsing Weber-Christian panniculitis M35.6

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code M79.3 are found in the index:


The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Acute panniculitis
  • Calcific panniculitis
  • Cold panniculitis
  • Cold panniculitis
  • Cytophagic histiocytic panniculitis
  • Drug-induced panniculitis
  • Eosinophilic panniculitis
  • Factitial panniculitis
  • Infantile onset panniculitis with uveitis and systemic granulomatosis
  • Infective panniculitis
  • Lipoatrophic panniculitis
  • Lipophagic panniculitis
  • Lobular panniculitis
  • Neonatal cold panniculitis
  • Neonatal disorder of subcutaneous fat
  • Neonatal disorder of subcutaneous fat
  • Nodular panniculitis
  • Nutritional steatitis
  • Panniculitis
  • Panniculitis due to action of lipolytic enzymes
  • Panniculitis due to action of lipolytic enzymes
  • Panniculitis due to action of lipolytic enzymes
  • Panniculitis due to alpha-1 anti-trypsin deficiency
  • Panniculitis due to cholesterol emboli
  • Panniculitis due to crystal deposition
  • Panniculitis due to crystal deposition
  • Panniculitis due to hyperuricemia
  • Panniculitis due to immunological disorder
  • Panniculitis due to immunological disorder
  • Panniculitis due to immunological disorder
  • Panniculitis due to immunological disorder
  • Panniculitis due to physical factor
  • Panniculitis due to physical factor
  • Panniculitis due to physical factor
  • Panniculitis due to physical factor
  • Panniculitis in newborn
  • Panniculitis in newborn
  • Panniculitis resulting from corticosteroid therapy
  • Panniculitis secondary to histiocytic disorder
  • Panniculitis secondary to histiocytic disorder
  • Panniculitis secondary to malignancy
  • Panniculitis secondary to pancreatic disease
  • Panniculitis with complement deficiency
  • Panuveitis
  • Pressure panniculitis
  • Septal panniculitis
  • Subcutaneous calcification
  • Traumatic fat necrosis

Clinical Information

  • PANNICULITIS NODULAR NONSUPPURATIVE-. a form of panniculitis characterized by recurrent episodes of fever accompanied by the eruption of single or multiple erythematous subcutaneous nodules on the lower extremities. they normally resolve but tend to leave depressions in the skin. the condition is most often seen in women alone or in association with other disorders.
  • PANNICULITIS-. general term for inflammation of adipose tissue usually of the skin characterized by reddened subcutaneous nodules.
  • PANNICULITIS LUPUS ERYTHEMATOSUS-. a type of lupus erythematosus characterized by deep dermal or subcutaneous nodules most often on the head face or upper arms. it is generally chronic and occurs most often in women between the ages of 20 and 45.
  • PANNICULITIS PERITONEAL-. inflammation of the underlying layer of adipose tissue panniculus of the peritoneum usually of the mesentery or the omentum. there are several forms with various names and are usually characterized by infiltration of lymphocytes and neutrophils fat necrosis and fibrosis.

Diagnostic Related Groups

The ICD-10 code M79.3 is grouped in the following groups for version MS-DRG V37.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2019 through 09/30/2020.


Convert M79.3 to ICD-9

  • 729.30 - Panniculitis, unsp site (Approximate Flag)

Code Classification

  • Diseases of the musculoskeletal system and connective tissue (M00–M99)
    • Other soft tissue disorders (M70-M79)
      • Oth and unsp soft tissue disorders, not elsewhere classified (M79)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients

Connective Tissue Disorders

Your connective tissue supports many different parts of your body, such as your skin, eyes, and heart. It is like a "cellular glue" that gives your body parts their shape and helps keep them strong. It also helps some of your tissues do their work. It is made of many kinds of proteins. Cartilage and fat are types of connective tissue.

Over 200 disorders that impact connective tissue. There are different types:

  • Genetic disorders, such as Ehlers-Danlos syndrome, Marfan syndrome, and osteogenesis imperfecta
  • Autoimmune disorders, such as lupus and scleroderma
  • Cancers, like some types of soft tissue sarcoma

Each disorder has its own symptoms and needs different treatment.

NIH: National Institute of Arthritis and Musculoskeletal and Skin Diseases

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